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Add CAT_STATUS_AGAIN to report io::[write|read] can't send or receive more data #29

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Add CAT_STATUS_AGAIN to report io::[write|read] can't send or receive more data #29

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18 changes: 9 additions & 9 deletions src/cat.c
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Original file line number Diff line number Diff line change
Expand Up @@ -495,7 +495,7 @@ static cat_status error_state(struct cat_object *self)
assert(self != NULL);

if (read_cmd_char(self) == 0)
return CAT_STATUS_OK;
return CAT_STATUS_AGAIN;

switch (self->current_char) {
case '\n':
Expand Down Expand Up @@ -529,7 +529,7 @@ static cat_status parse_prefix(struct cat_object *self)
assert(self != NULL);

if (read_cmd_char(self) == 0)
return CAT_STATUS_OK;
return CAT_STATUS_AGAIN;

switch (self->current_char) {
case 'T':
Expand Down Expand Up @@ -695,7 +695,7 @@ static cat_status parse_command(struct cat_object *self)
assert(self != NULL);

if (read_cmd_char(self) == 0)
return CAT_STATUS_OK;
return CAT_STATUS_AGAIN;

switch (self->current_char) {
case '\n':
Expand Down Expand Up @@ -831,7 +831,7 @@ static cat_status wait_read_acknowledge(struct cat_object *self)
assert(self != NULL);

if (read_cmd_char(self) == 0)
return CAT_STATUS_OK;
return CAT_STATUS_AGAIN;

switch (self->current_char) {
case '\n':
Expand Down Expand Up @@ -896,7 +896,7 @@ static cat_status wait_test_acknowledge(struct cat_object *self)
assert(self != NULL);

if (read_cmd_char(self) == 0)
return CAT_STATUS_OK;
return CAT_STATUS_AGAIN;

switch (self->current_char) {
case '\n':
Expand Down Expand Up @@ -1862,7 +1862,7 @@ static cat_status parse_command_args(struct cat_object *self)
assert(self != NULL);

if (read_cmd_char(self) == 0)
return CAT_STATUS_OK;
return CAT_STATUS_AGAIN;

switch (self->current_char) {
case '\n':
Expand Down Expand Up @@ -1968,7 +1968,7 @@ static cat_status process_idle_state(struct cat_object *self)
assert(self != NULL);

if (read_cmd_char(self) == 0)
return CAT_STATUS_OK;
return CAT_STATUS_AGAIN;

switch (self->current_char) {
case 'A':
Expand Down Expand Up @@ -2463,7 +2463,7 @@ static cat_status process_io_write(struct cat_object *self)
}

if (self->io->write(ch) != 1)
return CAT_STATUS_BUSY;
return CAT_STATUS_AGAIN;

self->position++;
return CAT_STATUS_BUSY;
Expand Down Expand Up @@ -2493,7 +2493,7 @@ static cat_status unsolicited_process_io_write(struct cat_object *self)
}

if (self->io->write(ch) != 1)
return CAT_STATUS_BUSY;
return CAT_STATUS_AGAIN;

self->unsolicited_fsm.position++;
return CAT_STATUS_BUSY;
Expand Down
3 changes: 2 additions & 1 deletion src/cat.h
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Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,8 @@ typedef enum {
CAT_STATUS_ERROR = -1,
CAT_STATUS_OK = 0,
CAT_STATUS_BUSY = 1,
CAT_STATUS_HOLD = 2
CAT_STATUS_HOLD = 2,
CAT_STATUS_AGAIN = 3
} cat_status;

/**
Expand Down